Primobolan Depot is the injectable version of the steroid methenolone and, although it produces a weaker effect than Deca-Durabolin it is a very good basic steroid whose effects are predominantly anabolic. The fact that an enanthate ester is added to this steroid enables a slow and gradual release from the injection site. This addition allows for a longer half-life of approx 14 days (similar to Testosterone Enanthate) although most athletes prefer to administer it on a weekly basis.

Primobolan’s popularity stems from the fact that it is the only steroid that seems to work well on a low calorie diet (making it a pre-contest drug of choice) and side effects are rarely a problem since it is relatively non toxic, low in androgens and it does not convert to estrogen (aromatize) therefore estrogen related side effects are not an issue. In addition to this it seems to have a positive effect on the immune system (thus its popular use in Aids patients) and the fact that it adds primarily lean mass leads to a strengthening of the whole body system. When you consider these facts it is hard to believe that Primobolan Depot is not legally approved by the FDA in the United States…but that’s politics for you!

Now, having said all of the above, it has to be said that Primobolan does have its side effects including light acne, deepening voice and increased hair growth (these effects resulting form the androgenic residual effect). However, it displays low liver toxicity and usually has little effect on blood pressure and cholesterol, which makes it one of the safest injectable anabolic steroids. It is also worth pointing out that the bodies own testosterone production is only reduced when high dosages are taken for prolonged periods.

Speaking of dosages, the ‘safe’ dosage for men is 100-200mg per week although some bodybuilders have been known to go as high as 600mg/week (and even 800mg). Androgenic effects are inevitably higher at this rate but are usually tolerable. A better option is to stack Primobolan with stronger steroids in order to enhance the effect. Primo, Sustenon 250 and Dianabol is one such stack, which will produce rapid gains. Another example is Primo 200mg/week and Deca-Durabolin 200-400mg/week or Primo with Winstrol Depot 200-400mg/week. Although adding additional compounds can increase side effects, Primobolan does tend to lessen the harshness of the more heavy-duty steroids (e.g. all the testosterones) when added to a cycle.

Female athletes can get good results from 100-200mg a week and 50mg of Winstrol Depot can be added (although virilization problems may occur in sensitive individuals). A safer option would probably be 100mg Primobolan with 7.5mg Oxandrolone (or Winstrol oral, 10mg), which represents a cautious dose for those seeking to experiment with anabolics.

All in all, when you consider the fact that Primobolan is the only steroid that works on a low calorie diet, builds lean mass, adds hardness and tone AND positively effects the immune system it is easy to see why it is one of the most popular steroids on the market and has gained something of a ‘cult’ following over the years.